The main things that hindering in making constitution is lack of commitment. Especially prime minister has to take initiative for this. Resolving the issue of Maoist militants is another issue that priminister must take lead. If the Maoist militants problem had been solved before the demise of Girija Prasad koirala then it wouldn't be a complex issue. It is the lack of commitment from PM for not finishing the militants issue on time.
Next, this is not the ordinary term for PM. This term also consist for drafting constitution. So, up to now i haven't seen any eagerness in PM like facing the main issues like how many federal states and what will be their borders and resources. That's the real checkpoint judging the leadership and the wisdom of PM.
Finally, Maoist has been carrying indefinite Bandh from sunday, I don't think everybody who has been involved know the cause of this bandh. Secondly, this is promoting bad culture in society and PM resignation from street.